Liquid-fuel burner.



M. PIKE. LIQUID FUEL BURNER;

APPLICATION FILED MAY 26, 1912.

Patented June 24, 1913.

COLUMBIA PLANU'GRAPH (20WASHINGTON, D. 0.

Jim??? all? MA N NG IK F L DO LAN LIQUID-FUEL BURNER.

Specification of Letters Patent.

Patented June 24, 1913.

Application filed M ay 25, 1912. Serial No. 699,581.

To all whom it may concern:

Be it known that I, MANNING PIKE, a citizen of the United States,residing at London, England, have invented new and useful Improvementsin LiquicLFuel Burners, of which the following is a specification.

My invention relates to improvements in wick lamps or burners usingspirit or like volatile fuel and provides a novel construction of suchlamps or burners whereby the flame can be adjusted from the largest possible in the lamp down to the smallest flicker.

My improved lamp is of the kind wherein there is a central conduit upwhich the air required for combustion passes in contact with the lateralsurface of a wick that is ifn comn'lunication with a supply of liquiduel.

According to my invention, a stationary hollow wick is used preferablysupported on its inner surface by perforated metal but otherwisecompletely inclosed so that com bustion may occur only on this inner,surface. The supply ofair to the exposed surface of the wick may becontrolled by a suitable valve arranged in the air-conduit. When a wickmade of a combustible material is used, the same is protected by alayerof asbestos or other suitable fireproof material, in order to preventdestruction of the wick in the event of the lamp being allowed to burnout. By supplying the wick with spirit or like volatile fuel, forexample, a light hydrocarbon, a very useful heating flame can beobtained, the size of which can be regulated as desired by adjusting theamount of air that is allowed to pass through the supply conduit.

In the accompanying drawing, I have shown how my said invention may beconveniently and advantageously carried into practice.

In this drawing :Figure 1 is a vertical central section of one form ofmy improved lamp, and Fig. 2 is an underside view thereof.

In the lamp shown, the liquid-fuel container a; has a centralair-conduit b, to which air passes through holes 0, 0 formed in the base(i. In the lower end of the conduit 6 is mounted a perforated diaphragme and a correspondingly perforated rotary valve 7 movable thereon. Thisvalve is provided 5 with an arm g, which extends through a slot in inthe base (Z, so as to enable the valve f to bereadily adjusted from theexterior.

The air conduit Z) is preferably made frusto-conical and the partthereof above the container 0; has its wall made of perforated sheetmetal 6, on which is arranged a layer of fibrous asbestos j forming theflame surface of the wick. This layer is conveniently formed by windingan asbestos cord around the perforated metal part Z). The other part isof the wick may be of cotton or of any other suitable material andextends down into the container a in the usual manner. The wick 7c isinclosed in a frusto-co-nical imperforate casing m, the lower end ofwhich is connected fluid-tight to the upper wall of the container a. Theupper end of the casing m is provided with an inwardly-turned flange nfor retaining in position an asbestos washer 0 protected on its upperand lower surfaces by mica washers p, p. A woven wire disk or diaphragmr is placed at the base of the part b and rest ing on the inturned edgeofthe conduit 79. This disk besides preventing striking back of theflame, also enables the size of the flame to be more easily graduatedbetween t-he biggest flame and the smallest flame obta n b e- The flameis produced in the conduit I) above the wire disk 1" and over theexposed surface of the wick and extends out of the casing m through theasbestos washer o, the size of the flame being increased or diminishedby opening or closing the valve 7.

If desired the air-conduit b may be cylindrical or of other suitableform instead of frusto-conical as shown.

I claim:

1. A lamp for burning spirit and like volatile fuel, said lampcomprising a fuel-container, a tubular wick having an exposed interiorsurface, a tube which completely in closes and supports the outersurface of said wick, a conduit for supplying air to said exposedinterior surface of the wick, and a perforated diaphragm extendingacross the air-conduit substantially at the base of the exposed surfaceof the wick.

. 2. A lamp for burning spirit and like volatile fuel, said lampcomprising a fuel-container, a tubular wick having an exposed interiorsurface, a conduit for supplying air to said exposed surface, a wovenwire dia phragm of small mesh extending across said conduitsubstantially at the base of said exposed surface, a perforated metalsupport for the interior of the Wick, and a tube which completelyincloses and supports the outer surface of the wick.

3. A lamp for burning spirit and like volatile fuel, said lampcomprising a fuel-container, a tubular wick having an exposed interiorsurface, a conduit for supplying air to said exposed surface, an openmesh diaphragm of woven material extending across said conduitsubstantially at the base of said exposed surface, a perforated metalsupport for the interior of the wick, a tube which completely inclosesand supports the outer surface of the wick, and a valve for controllingthe passage of air through said conduit.

4. A lamp for burning spirit and like volatile fuel, said lampcomprising a fuel container, a tubular wick comprising an outer portionof non-fireproof material and an inner portion of fire-proof materialwhich has an exposed interior surface, a tube which completely inclosesand supports the outer surface of the wick, a conduit for supplying airto said exposed interior surface of the wick, and a perforated diaphragmextending across the air conduit substantially at the base of theexposed interior surface of the Wick.

5. A lamp for burning spirit and like volatile fuel, said lampcomprising a fuel-container, a tubular fibrous wick comprising an outerportion of non-fireproof material and an inner portion of asbestoshaving an ex posed interior surface, a tube which completely inclosesand supports the outer surface of the wick, a conduit for supplying airto said exposed interior surface of the wick, and a perforated diaphragmextending across the air conduit substantially at the base of theexposed interior surface of the wick.

6. A lamp for burning spirit and like volatile fuel, said lampcomprising a fuel-container, a tubular wick, comprising an outer portionof non-fireproof material and an illner portion of asbestos having an,exposed interior surface, a conduit for supplying air to said exposedsurface, a Woven wire diaphragm of small mesh extending across saidconduit substantially at the base of said exposed interior surface, aperforated metal support for the interior of the wick, and a tube whichcompletely incloses and supports the outer surface of the wick.

7 A lamp for burning spirit and like volatile fuel, said lamp comprisinga fuel-container, a tubular wick comprising an outer portion ofnon-fireproof material. and an inner portion of asbestos having anexposed interior surface, a conduit for supplying air to said exposedsurface, an open mesh diaphragm of woven material extending across saidconduit substantially at the base of said exposed surface of the wick, aperforated metal support for the interior of the wick, a tube whichcompletely incloses and supports the outer surface of the wick, and avalve for controlling the passage of air through said conduit.

'MANNING PIKE.

Witnesses:

GEORGE HARRISON, G. DONALD HARRISON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. O.

